We look at the division of 15239 by 8 
The aim is to understand the frequency of 8 in 15239.

Advancing to step 1:
8 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 8

Going ahead to step 2:
When dividing 15 by 8, we get 1 with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 8 from 15 to get 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 8

Advancing to step 3:
8 can be fit into 72 9 times, resulting in a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we take 72 away from 72, we end up with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 8

Let's proceed to step 4:
8 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 190.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 8

Advancing to step 5:
If we divide 39 by 8, we get 4 and a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 1904.0
The remainder is 7 after subtracting 32 from 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 6:
The number 8 fits into 70 8 times, leaving a remainder of 6.
The next digit of our result is 8. 
Result so far: 1904.8
Subtracting 64 from 70 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
When dividing 60 by 8, we get 7 with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 1904.87
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
40 divided by 8 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 1904.875
If we take 40 away from 40, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
8 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1904.875
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
8 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1904.875
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 1904.875 with a remaining 0.0.